The angle of the u-joints can be checked in a matter of minutes, so I say go ahead and check them, then you can also check for worn parts, as that never hurts.
The angles can be found with a protractor head with a level in it, like comes in a good combination square set. Or can use an angle finder, the roundish one with a magnetic base and a pendulum. Read the manuals in the tech tip for all the details and reasons, but you will be looking for the transmission output shaft and the pinion to have parallel centerlines.
Sometimes people will say the "pinion angle" should be so many degrees and give a number, but there is no right or wrong pinion angle without knowing the angles of the other parts. If it is right or not is 100% dependent on its relationship to the other components of the driveline.
Grigg
